Finding the Fourth Proportional to 2,973.62, 4,105.48 and 1,911.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,973.62 : 4,105.48 = 1,911.88 : x
2. Step 2: Convert to fraction form
   2,973.62/4,105.48 = 1,911.88/x
3. Step 3: Cross multiply
   2,973.62x = 4,105.48 × 1,911.88
4. Step 4: Simplify right side
   2,973.62x = 7,849,185.10
5. Step 5: Solve for x
   x = 7,849,185.10/2,973.62
6. Step 6: Final answer
   x = 2,639.61